The Unified Set, Dual Structure and 45° Cone Geometry A Unified Framework for Eight Fundamental Physical Problems

Starting from the fundamental unified set and the inherent duality of existence, this paper deduces a four-dimensional explicit set and a five-layer equilibrium structure, and proves that its stable equilibrium configuration naturally corresponds to the 45° conical geometry. The entire framework is concise and self-consistent, and provides a unified explanation for eight fundamental physical problems without additional hypotheses. It is shown that the deep structure of the universe is not complicated or obscure, but a simple and symmetric form derivable from a single primordial principle.